Yamaha YZF-R125 Service Manual: Disassembling the front fork legs
The following procedure applies to both of the front fork legs.
1. Remove:
- Rubber cap
- Clip "1"
- Front fork cap "2" (with O-ring)
- Fork spring
NOTE:
Push the front fork cap in the direction of the arrow shown in the illustration to remove the clip.
2. Drain:
- Fork oil
NOTE:
Stroke the inner tube several times while draining the fork oil.
3. Remove:
- Dust seal "1"
- Oil seal clip "2" (with a flat-head screwdriver)
| CAUTION: Do not scratch the inner tube.
|
4. Remove:
- Damper rod bolt "1"
- Damper rod
NOTE:
While holding the damper rod with the damper
rod holder "2" and T-handle "3", loosen the
damper rod bolt. 
Removing the front fork legs
The following procedure applies to both of the
front fork legs.
1. Stand the vehicle on a level surface.
WARNINGSecurely support the vehicle so that there
is
no danger of ...
Checking the front fork legs
The following procedure applies to both of the
front fork legs.
1. Check:
Inner tube
Outer tube
Bends/damage/scratches
Replace.
WARNINGDo not attempt to straighten a bent inner ...
Other materials:
Checking and lubricating the brake and shift pedals
Brake pedal
Brake pedal
Shift pedal
Shift pedal
The operation of the brake and shift
pedals should be checked before each
ride, and the pedal pivots should be lubricated
if necessary.
Recommended lubricant:Lithium-soap-based grease
...
Drive chain slack
The drive chain slack should be
checked before each ride and adjusted
if necessary.
To check the drive chain slack
Place the motorcycle on the sidestand.
TIP
When checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.
Shift the transmission in ...
Faulty front fork legs
Leaking oil
- Bent, damaged or rusty inner tube
- Cracked or damaged outer tube
- Improperly installed oil seal
- Damaged oil seal lip
- Incorrect oil level (high)
- Loose damper rod assembly bolt
- Damaged damper rod assembly bolt copper
washer
- Cracked or damaged front fork cap O-ring
M ...